There are a number of companies selling NIR instrumentation. These are a few worth considering.

CDI Pharma

Control Development provides low cost diode array benchtop instruments as well as a wireless, explosion-proof instrument for following pharmaceutical processes in the process stream.

Metrohm NIRSystems

NIRSystems, a pioneer NIR company with over 35 years of experience, supplies benchtop and process instruments. Based on rapid grating and diode-array technology, they offer many software features absent in other packages and are now fully compatible with "Unscrambler" and their software works with Microsoft Vista.​